diff --git a/Marlin/stepper.cpp b/Marlin/stepper.cpp
index 7fe96f2687..c8bcbbbf2b 100644
--- a/Marlin/stepper.cpp
+++ b/Marlin/stepper.cpp
@@ -202,10 +202,6 @@ volatile signed char count_direction[NUM_AXIS] = { 1, 1, 1, 1 };
     "r26" \
   )
 
-// intRes = longIn1 * longIn2 >> 24
-// uses:
-// r26 to store 0
-// r27 to store the byte 1 of the 48bit result
 // intRes = longIn1 * longIn2 >> 24
 // uses:
 // r26 to store 0